R01UH0822EJ0100 Rev.1.00
Page 251 of 1041
Jul 31, 2019
RX13T Group
16. Data Transfer Controller (DTCb)
16.2.3
DTC Mode Register C (MRC)
The MRC register is used to select DTC operating mode and cannot be accessed directly from the CPU.
This register can only be used in full-address mode, but not in short-address mode. Therefore, set the
DTCADMOD.SHORT bit to 0 (full-address mode) when using the displacement addition function.
DISPE Bit (Displacement Addition)
This bit specifies whether to use the SAR + DTCDISP value as the transfer source address.
When setting the DISPE bit to 1, set the MRA.WBDIS bit to 1 (does not write back the transfer information) and set the
DTCCR.RRS bit to 0 (transfer information read is not skipped).
Address(es): (inaccessible directly from the CPU)
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
—
—
DISPE
Value after reset:
x
x
x
x
x
x
x
x
x: Undefined
Bit
Symbol
Bit Name
Description
R/W
b0
Displacement Addition
0: The displacement value is not added to the transfer source
address.
1: The displacement value is added to the transfer source address.
—
b7 to b1
—
Reserved
Set these bits to 0.
—